I've been considering this and at a certian gear level wouldn't ES scale enough so that using ES,ES,ES would be the highest dps for a LnL Proc? You would only get 7/9 ticks of the three Explosive Shots but you would start the cooldown for ES three seconds faster than using ES,AS,ES,SS,ES. Doing this for two LnL procs would give you an "Extra" ES over the other rotation offsetting the loss to 1 Tick every two LnL procs.